4D Godless Christmas festivities

[lethargic_man]

Courtesy of Jim at work:

If Chanucka is a two dimensional festival (triangles), Christmas is a three dimensional festival (pyramids) then I thought I should invent a 4D festival to celebrate at the 9 Lessons and Carols for Godless People.

Read on to find out what on earth he's on about.

Comments

[ewx.livejournal.com]

IIRC one of Martin Gardner’s books has a nice section on that kind of geometrical approach to mathematical problems. It’s a really nice approach, while I know intellectually that induction [the usual attack on e.g. sum-of-first-N-integers] is watertight, the all-integers proofs still feel more solid somehow.